Drop hammer



June 9, 1931. F. J. vLcHEK 1,809,805

DROP HAMMER Y Filed April 24, 1931 w LWN f if J WMM AT TQRNLJ@ Patented June 9, 1931 [Unirse gST-TESPTENTorifice FRANK -J. vLcI-IEK,

on CLEVELAND, onro, AssIeivoIil 'ro THE' vIicH'Ex Toon COMPANY, F CLEVELAND? ,OHIIOaA GORPOMHON OFDHIO .L Y

' Dnor'HAMMEa f Applicaitvimieenprn 24, 1931.* serial No.' 532,395. [i

i invention relates to drop hammeraailfd.

1 particularly to'means forelevating'the ham-v 'Fieule l, n Figure 3 is a section on the llne of Figurel, y 20 mer heads of drop hammers, and the, principal object of myinv'ention is to provide' new andimproved means of this type.vr This application isa continuationin part .of my i Y application..y `Serial Number Civ-pending. 386,467.1iledAugustl, 1929. In the drawings accompanying this specilication and*` f forming a part of this'application I have shown7 for vpurposes of illustrationone form which my invention may assume, and in thesel dra-Wings: y

' Figure 1 lis Y hammer embodying my invention,

j -Figure 2 is asectionon the line22iof Figure 4 is a vievv-` inelevation of aboard employed inthe embodi` ent of'my .invention hereinA shovvmivhile y f Figure y5 is anenlarged view* ofi-anfrag-` ment of Figure 2, showing in detail the contours of the rollersand of the' board. K' I have shown hereina hammer 11 compriseA ing aibase A12onl which is mounted an anvil 13; from this base l12 `rise si'debars 14 pro-vr viding guides 15 inwhich they hammerihead @'16 is reciprocable and united .atfthelr upper' endsfbya top. platekl'v? towhich is suitably f secured the base`v plate 18 yoi the hammery head operating lmechanism 19.y .p n. .y The hammer head operating mechanism `19 k comprises a pair'offshafts 20 andy21mounted in eccentric bearings; 22 and L,23 themselves mounted in bearingapertures 24; `and 25 formed in two bracketsd26 secured to yand rising Y from Vthe Ahammer ,head operating means base 'plate 18. Theshaft`20is pro;

yvided atp-its( ends With pulleys f2 7adaptedto receive belts (not shown) by which the shaft 20vmay be driven.v [`hertvvo yeccentricbearings for the sha-ft 20 arejconn'ected by a coinbined crankk and housing 285bywmeansofv` Vwhich the lbearings 22y mayzbe `rotated, and held in position, Ythus tot adjust the .position of the shaftl20 to take up Wear,and,to}ho ld ythe shaft 2O in adjusted positiom Whilethe ytWo eccentricbearings23 ofthe Shaitv 2l;a rek y a .front elevation ot a Connected by asimilar combined cranlrand i housing 29, andin addition L'carry at one end tion of the control shaft -33 Will/operate .through the cam 32andolloWer 31 to cor respondingly oscillate the eccentric bearings 23 of-the rshaftf21thus alternately to advance and retract the shaft' 21.

' Mounted n the shafts 2O and 21 are a pair of rolls 34*v and 35 eachhprovided on .its perripherjy'vvith a pair of Vlr-channels 36 inwhich are posltloned .tailepiecemeans comprisiriga pair ,of Woodenv boards 37. eachtruncated-V? eonvex oneach side, to be embraced (Within,

the channels 36 off the rolls 34 and35fvvhen the roll ";is approachedtoward the roll k34,

and each liatftenedfat yits loyver yendat f38, to vbe received ina suitable recess 39 in, the yham-r `mer headlb,y andy lock-eilte the hammer head 16 by means of suitable: wedges 0.`

yF rom the above' itfofcourseivillbe under-J i stood that When'f the roll 35 is approached .to,

Ward thevr roll 34 the boards37 Willbe gripped,

thusiraising the compressible fibrous` boards 37 andthe hammer head 16 and that when' the rroll 3,5A is subsequently retracted7 .as yoccurs Whenthe` hammer head 16 has been Ysuitably elevated,y the rolls 34land k35 will: release. .the boards 37, thus to permitthe Ahammer vhead 16k to drop, strikeitsblow; yandbe ready for' f 'i a subsequentr elevation; also it vvill be obviousthat With the construction ,herein shovvn4 the boards 37, are embraced Within the channels 36iin4the rollers 34 and 35,7 thus to` produce a greater surfacepressure between ythe boards and-therolls yWith 'they saine pressure onthe rolls", andv simultaneously fto support kthe Q boards'against disrup'tioman'd retard deterioration of'theboards. y f f i f' v' It will jbe noted,hovvever, that the truncation ofthev boards 3'( provides'awclearance 41 yat theapex kof thefconveizity into vWhich the lxiardsy may flow, underthe action of` thecomactual practice this seemsto be advantageous, vboth asfacilitating vthe .grip of the rollsy on kthe'boardy'fandv 'as'fa result, the speed yWith yWhichv the hammermayibeoperated, and also 9,5 pressionexerted/bytherolls 34 and 35; in

as increasing the permissible life of the board.

Under these circumstances those skilled in the art will realize that the embodiment of my invention herein shown and described accomplishes at least the principal ob ject of my invention; at the same time those skilled inv the art will realize that the particular embodiment of my invention herein shown and described may be variously changed and modified without departing from the spirity ploy my invention in Yother ty es of drop hammers, and 'accordingly it Wi l be understood that the disclosure herein is illustrative only, and that my Vinvention is not limited thereto.

I claim: y 1. Actuating mechanism, as for actuating a drop-hammer hammer-head, including: a pair of cooperating roller means, and a rigid board of fibrous Woody material, dis osed therebetween and resiliently compressib e under pressure said roller means being forcibly engageable with said board, said board on the side toward at least one of said roller means being convex, and said roller means being c0- operatinglyrconcave, such conveXity and concavity being of such sharp contour that said roller means embraces laterally to hold said board against slipping and edgewise split-v tin 2g. Actuating mechanism, as for actuating a drop-hammer hammerghead, including: a air of coo erating roller means, anda rigid board of brous woody material, disv osed therebetween and resiliently compressib e unf der pressure; said roller means being forcibly en geable with said board, said board on the si etoward at least one of said roller means being substantially V-convex, with the angle' of the convexity being not materially greater than ninety degrees, and said roller means being cooperatingly concave. to hold said board against splitting and sli iping.

3. Act-uating mechanism, as or actuating a drop-hammer hammer-head, including: a'

air of coo erating roller means, and a rigid board of brous woody material, disposed therebetween and resiliently compressible under pressure; said rollermeans being forcibly engageable with said board, said board being substantially rhomboidal in cross-section, and diagonally disposed, and said roller means be ing cooperatingly concave, to hold said board against splitting and slipping. y y

4. Actuating mechanism, as for lactuating a drop-hammer hammer-head, including: cooperating roller means, and a rigid board disposed therebetween; said board being of fibrous woody material, and resiliently compressible under pressure, and said roller means being forcibly enga-geable with said board, substantially encircling said board about the cross-sectional periphery thereof and engaging at least partly along incline lines of Contact, wedging said board, to hold said board against slipping and splitting.

5.' Actuating mechanism, as for actuating a drop-hammer hammer-head, including: a pair of cooperating roller means, and a rigid b oard of fibrous woody material, disposed therebetween and resiliently compressible under pressure; said roller means being forcibly enga geable with said board, said board on the si e toward at least one of said roller means vbeing convex, and said roller means being cooperatingly concave, such convexity and concavity being of such sharp contour that said roller means embraces laterally to hold said board against slipping and edgewise splitting, and said roller means and `said board being so contoured that said board and and said roller means do not contact at the apex of said convexity.

6. Actuating mechanism, as for actuating a drop-hammer hammer-head, including: a pair of cooperating roller means, and a rigid board of fibrous woody material, disposed therebetwen and' resiliently compressible under pressure; said roller'means being forciblykengageable with said board, said board on the side toward at least one of saidv roller means being substantially V-convex, with the angle of the convexity being not materially greater than ninety degrees, and said 'roller means being cooperatingly concave, to hold said board againstsplitt'ing and slipping, said board however being truncated, and spaced from said roller means, at the apex of its convexity.

7. Actuatmg'mechanism, as for actuating a drop-hai'nrnerv hammer-head, including: a pir of co0 'rating roller means', and a rigid ard of brous woody material, disposed f therebetween and resiliently compressible under pressure; said roller means being forcibly' engageable with said board, said board being substantially rhomboidal in cross-section, and diagonally disposed, and said roller means being cooperatively concave, to hold said board against splitting and slipping, said board however being truncated, and spaced from said'roller means, on all diagonals of' said board.

8; Actuating mechanism, as for actuating a drop-hammer hammer-head, including: a pairof coo erating roller means, and a rigid board of brous woody material, dis osed therebetween and resiliently compressib e under pressure; said roller means being forcibly engageable with ysaid board, said board on the side toward at least one of said roller means being convex, and said roller means being cooperatingly concave, such convexity and concavity being of such' contour that said roller means embraces laterally to hold said board against slipping and4 edgewise splitting, and said roller means and said pair of cooperating roller means, anda rigid board of fibrous woody material, disposed therebetween and resiliently compressible under pressure; said roller means being forcibly engageable with said board, said board on the side toward at least one of said roller means being substantially V-conveX, and said roller means being cooperatinglyrconcave, to hold said board against splitting and slipping, said board however being truncated, and spaced fromsaid roller means,.

at the apex of its convexity. e

In testimony whereof I hereunto aiix my signature. Y

FRANK J. VLCHEK.v 

